pope benedict said today that a pope has no privacy. how difficult do you think being pope of -- a leader of 1.2 billion catholics worldwide was for quite a private man? >> reporter: it's been, i think, very, very difficult. this wasn't a man who was particularly comfortable in front of crowds. today we saw him at st. peters square in the popemobile there, and he looks frail, looks old, but he seemed to be enjoying himself. john paul ii is very much a more engaging pope and not as much as a private man as benedict xvi is. he will leave here tomorrow around this time, by helicopter, and he will go to castle gandolpho and come back to the vatican in his retirement. he'll go into isolation, he's chosen that for himself. the vatican garden cottage as it were, it's not particularly comfortable, i'm told, i haven't been in, but it is somewhere he can spend his twilight years as it were, and he's 85 years old, let's remember that, in peace and reflecting on where he is, who he is, and how far he's come. today was very much an occasion of refle